System and method for secure firmware update of a secure token having a flash memory controller and a smart card
US8898477B2 · kind B2 · utility
7Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2007 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Jan 15, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3247
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method of operating a device to securely update the control firmware controlling the device. Downloading a firmware update package to a first microcontroller of the device. Determining a firmware update portion and an encrypted hash portion of the firmware update package wherein the encrypted hash portion is cryptographically signed by a signatory. Confirm that the encrypted hash portion conforms to the firmware update by independently computing the hash of the encrypted firmware update portion on the first microcontroller and comparing that value to the signed hash. Other systems and methods are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.